Killington Resort, which opened two trails Monday, was the first ski mountain in North America to open to the public this season. Season-pass holders broke in the runs Sunday.

This is the first time in more than a decade that skiing has started this early at Killington, resort spokesman Michael Joseph said.

"It's always the goal to open before Halloween," he said. The resort opened Nov. 3 last year because of warm weather, but in years past Killington has opened as early as Oct. 1.

While early conditions still exist, the resort is operating two lifts that total about 600 vertical feet. One terrain park with six features, including multiple rails and boxes, is also open, Joseph said.

Cold weekend weather in Vermont allowed for snow making, he said. About an inch of natural snow fell on the mountain, and snowmaking created a nice base for skiing with an average depth of 6 to 12 inches.

"We saw a window in the forecast where we could make some snow, and we decided to go for it," Joseph said.